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LAS - RUSS > Equine Sarcoids > Flashcards

Equine Sarcoids Flashcards

1
Q

What are Equine Sarcoids?

A

Spontaneous, locally invasive, fibroblastic skin tumors.

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2
Q

T/F: Equine Sarcoids are the most common tumor on the horse

A

T

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3
Q

Three most common locations of Equine Sarcoids?

A

Head, Legs, Ventral Abdomen

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4
Q

Equine Sarcoids (do/do not) metastasize?

Recurrence is (rare/common)?

A

Do not have metastasis

extremely common to recur

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5
Q

What is the etiology of Equine Sarcoids

A

Bovine papilloma virus (BPV)

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6
Q

Four different appearance types of equine sarcoids? Describe them.

A
  1. Fibroblastic = proud-flesh like
  2. Verrucous = warty, flaky, raised, firm, leathery
  3. Combo of both
  4. Occult = slightly raised
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7
Q

Pathohistology of Equine Sarcoids

  1. What happens to epidermis?
  2. Marked ______ formation
  3. Irregularly arranged _____ (aka ____)
  4. Underlying muscle (is/is not) invaded?
A
  1. It becomes hyperplastic and hyperkeratotic
  2. rete-peg
  3. fibroblasts (whorls)
  4. IS NOT
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8
Q

DDx of Equine Sarcoids

1.
2.
3.
4.
5. for verrucous sarcoids specifically?
A
  1. Exuberant granulation tissue
  2. Fibrosarcoma
  3. Cutaneous habronemiasis
  4. SCC
  5. Dermatophytosis
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9
Q 
Options for Treatment of Equine Sarcoids:
1.
2.
3.
4.
5.
Or a combo of the above
A
  1. Surgical excision via scalpel/laser/electroblade/whatever
  2. Cryosurgery
  3. Chemo
  4. Radiation
  5. Bacillus-Calmette-Guerin (BCG) immunotherapy
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10
Q

Factors that determine what method of treatment you would choose for Equine Sarcoids:

1.
2.
3.
4.

A
  1. Size of sarcoid
  2. Number of sarcoids
  3. Location of sarcoids
  4. Value and behavior of the horse.
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11
Q

What is a benefit of using a laser to excise a sarcoid?

What is the downside?

A

It stops small blood vessels from bleeding, and if a large vessel is bleeding, you can move the laser away and allow the heat of the beam to thermocoagulate.

Downside is that when you’re suturing the incision afterwards they don’t tend to heal well.

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12
Q

Sarcoids Tx: Chemo.

  1. What is schedule and technique for cisplatin admin?
  2. _______ may be needed to faciliate injection of cisplatin.
  3. Success rate?
A
  1. 4 intratumoral injections given at 2 week intervals
  2. Sedation and local anesthetic.
  3. 96%
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LAS - RUSS (32 decks)

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